Installing [[rustup]] via curl produced a working install right away, whereas snap install curl didn't for some reason.
println! is a [[macro]], not a [[function]], and this is indicated by the !. At first glance I thought it meant it was a function with side effects.
"Cargo is Rust’s build system and package manager. Most Rustaceans use this tool to manage their Rust projects because Cargo handles a lot of tasks for you, such as building your code, downloading the libraries your code depends on, and building those libraries."